Setup SMTP with Office 365
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How to use Mail Contact object to enable outgoing SMTP relay
How to Set Up an SMTP Relay in Office 365
Setup an SMTP open relay between an onsite Windows Server and Office 365 - DailySysAdmin | For all things IT!
SMTP Relay in Office 365 environment | Part 3#4 - o365info.com
SMTP Relay in Office 365 environment | Part 3#4 - o365info.com
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